Bryant 548J*14D Heat Pump User Manual
Contents
1. SINGLE POINT HEATER HEATER HEATER BOX MODULE MODULE MOUNTING MOUNTING LOCATION 1 LOCATION 2 BRACKET SCREW C10029 Fig 29 Typical Component Location Single Point Boxes When heaters are installed power wiring to both heaters and the rest of the unit is connected via the single point box accessory which will be installed directly under the unit control box just to the left of the partition separating the indoor section with electric heaters from the outdoor section The single point box has a hinged access cover See Fig 29 The single point box also includes pigtails to complete the wiring between the single point box and the unit s main control box terminals Refer to the accessory heater and Single Point Box installation instructions for details on tap connections CONTROL IL BOX a BUSHING SINGLE POINT BOX MOUNTING SCREWS DRIP BOOT BRACKET MOUNTING SCREWS POWER WIRES FOAM BUSHING HEATER RELAYS HEATER MOUNTING SCREWS 008136 Fig 30 Typical Single Point Installation Heater and Supplementary Fuses When the unit MOCP device value exceeds2. Aa 25 TETE mE S225 2 2 2 ee a sh 2 Je ee ee 22 9699 909998 gs er 8 5 E rua M B umm 4 4 CROSS TOV OTD i LETTT TA NE TRES RT RT u 9 3 E Ad WHIN 1N1810INnH 5 dud i i b eons 40 009 mE A S OG ATAA pr G s J lesees es DOO 2b RITE I og S y G z lMsHunasoee omoi aie et EI 1 tt T NIXUS 1418 wl 5 TD Ge OD Bt Et ous Lj lay 1 ae 15 5 7 vuo 3 ds mi ie LAN 2 ll ria a gt Ma 92 61r MO wo OTA NET 4 wer D le a fat ERE S Sj jOsNas 5 0 Sf 14 58 18 Ve 4 JE aah Raees plc uo EI yw x 5 x Fle i N9ow ul 2 zr er aesa eX Syn cmm 0 pb eee ee Qu all ITF t i L mo a swim ma T LHM 1 1 T ul Tah S d in I 018 40 D ema 6 038 jill m 7o mex mu EE id i SE a Pacer S Loot Es 5n le uel Quom EE 9 meme ws ge dra 1 1 i 8 Loriot NIB O X18 i nS 40551924 L ET N00 O 014 055323 Hind gt gt gt d nior 61 4N08 320V ar eas ieee L 14011 we 1p 180 aig ES RERET 832 1808023 m sov E Ss cn D a dame mzun
3. RED and connect outdoor temperature switch EHR between 2nd and 3rd terminals 8 He Jorn ORN VIO ORN ORN 7 BRN l RED Bru 24 TRAN COMMON ORN ES LS L _ L8 2 O T OROT O O O RED RED BRN HCR1 ORN E P BRN BRN icra ea HC1 BRN RED RED 2 HCR2 oe SINGLE STAGE HEATER TWO STAGE HEATER C10354 Fig 31 Accessory Electric Heater Control Connections Outdoor Air Enthalpy Control Return Air Enthalpy Sensor PNO 33CSENTHSW The enthalpy control 33CSENTHSW is available as a field installed accessory to be used with the EconoMi er2 damper system The outdoor air enthalpy sensor is part of the enthalpy control The separate field installed accessory return air enthalpy sensor 33CSENTSEN is required for differential enthalpy control See Fig 32 Locate the enthalpy control in the economizer next to the Actuator Motor Locate two GRA leads in the factory harness and connect the gray lead labeled ESL to the terminal labeled LOW See Fig 32 Connect the enthalpy control power input terminals to economizer actuator power leads RED connect to 24V and BLK connect to GND The outdoor enthalpy changeover setpoint is set at the enthalpy controller Differential Enthalpy Control Differential enthalpy control is provided by sensing and comparing the out
4. Pwd CO Transformer Convenience Outlet GFCI Disconnect Access Panel C10361 Fig 23 Convenience Outlet Location Non powered type This type requires the field installation of a general purpose 125 volt 15 A circuit powered from a source elsewhere in the building Observe national and local codes when selecting wire size and conduit requirements fuse or breaker requirements and disconnect switch size and location Route 125 v power supply conductors into the bottom of the utility box containing the duplex receptacle Unit powered type A unit mounted transformer is factory installed to stepdown the main power supply voltage to the unit to 115 v at the duplex receptacle This option also includes a manual switch with fuse located in a utility box and mounted on a bracket behind the convenience outlet access is through the panel beneath the control box See Fig 23 The primary leads to the convenience outlet transformer are not factory connected Selection of primary power source is a customer option If local codes permit the transformer primary leads can be connected at the line side terminals on the unit mounted non fused disconnect or HACR breaker switch this will provide service power to the unit when the unit disconnect switch or HACR switch is open Other connection methods will result in the convenience outlet circuit being de energized when the unit disconnect or HACR switch is
5. VOID CCN COM SENSOR WIRING JUMPER TERMINALS AS SHOWN C08202 Fig 39 T 56 Internal Connections 22 CR mz Jumper LETY C08461 Fig 40 RTU MP T 56 Sensor Connections Connect T 59 The T 59 space sensor requires a separate isolated power supply of 24 VAC See Fig 41 for internal connections at the T 59 Connect the SEN terminal BLU to RTU MP J20 1 Connect the COM terminal BRN to J20 2 Connect the SET terminal STO or BLK to J20 3 BLK STO a E eue J20 3 I BRN COM SENSOR s J202 WIRING l BLU SPT num J20 1 l I SET SEN OPB COM PWR OJOJOO Pi eses POWER 24 VAC WIRING NOTE Must use a separate isolated transformer C10291 Fig 41 Space Temperature Sensor Typical Wiring 33ZCT59SPT Economizer Controls To wire the return air enthalpy sensor perform the following 1 Use a 2 conductor 18 or 20 AWG twisted pair cable to connect the return air enthalpy sensor to the enthal py controller 2 Connect the field supplied RED wire to spade connector on the return air enthalpy sensor and the terminal on the enthalpy controller Connect the BLK wire to spade connector on the return air en
6. FILTER FILTER CLIP C10009 Fig 13 Economizer Filter Installation Caulk the ends of the joint between the unit top panel and the hood top as shown in Fig 11 Replace the filter access panel Step 9 Install External Condensate Trap and Line The unit has one 4 in condensate drain connection on the end of the condensate pan and an alternate connection on the bottom See Fig 14 Unit airflow configuration does not determine which drain connection to use Either drain connection can be used with vertical or horizontal applications When using the standard side drain connection ensure the red plug in the alternate bottom connection is tight Do this before setting the unit in place The red drain pan can be tightened with a in square socket drive extension To use the alternate bottom drain connection remove the red drain plug from the bottom connection use a gt in square socket drive extension and install it in the side drain connection STANDARD SIDE DRAIN 10 CONDENSATE PAN SIDE VIEW DRAIN PLUG FACTORY INSTALLED ALTERNATE BOTTOM DRAIN C08021 Fig 14 Condensate Drain Pan Side View The piping for the condensate drain and external trap can be completed after the unit is in place See Fig 15 2 51 MIN MINIMUM PITCH 1 25mm PER 10 3m OF LINE BASE RAIL OPEN VENT SEE NOTE ROOF CURB DRAIN PLUG NOTE Trap
7. ER t pen ACCY sm ecur yj DEFROST CENTRAL wor 22041 c2 a IFC BOARD TERMINAL BOARD x CAPI ACCESSORY ACCESSORY WINTER GUARD TIME GUARD CAP2 1 2 3 ACCESSORY HE STATIC ele 1B1 i 230V ACCESSORY JACCESSORY PMR OPTION ONLY Bes igh OFM GUARD EQUIP GR C10024 Fig 34 548J 14D Control Box Component Locations 19
8. Sex VN N BASE PLATE FOR GFCI RECEPTACLE 009022 Fig 25 Weatherproof Cover Installation 14 Factory Option Thru Base Connections This service connection kit consists of a 4 in electrical bulkhead connector and a 1 in electrical bulkhead connector all factory installed to the basepan cover plate Remove the cover plate from the shipping bracket and attach to basepan with 8 screws provided The 2 in bulkhead connector enables the low voltage control wires to pass through the basepan The 1 2 in electrical bulkhead connector allows the high voltage power wires to pass through the basepan See Fig 26 Check tightness of connector lock nuts before connecting electrical conduits LOW VOLTAGE CONDUIT CONNECTOR Sus SQ HIGH VOLTAGE C CONDUIT CONNECTOR C10017 Fig 26 Thru Base Connection Fittings Field supplied and field installed liquidtight conduit connectors and conduit may be attached to the connectors on the basepan Pull correctly rated high voltage and low voltage wires through appropriate conduits Connect the power conduit to the internal disconnect if unit is so equipped or to the external disconnect through unit side panel Remove one of the two knockouts located on the bottom left side of the unit control box Use this hole for the control conduit Units without Thru Base Connections 1 Install power wiring conduit through side panel open ings Install
9. 153 6 167 0 175 175 150 162 440 451 288A00 294A00 32 7 43 5 90 7 104 7 175 8 193 3 200 200 170 186 547 575 179 6 197 1 200 200 174 190 551 579 291A00 294A00 37 6 50 0 104 3 120 3 192 8 182 7 200 200 185 204 575 607 196 6 186 5 200 200 190 208 579 611 NONE 62 4 80 65 366 66 2 80 70 370 291A00 12 4 16 5 34 4 39 7 105 4 112 0 110 125 105 111 400 406 109 2 115 8 110 125 109 115 404 410 288A00 291A00 19 9 26 5 55 3 63 8 131 5 142 2 150 150 129 139 477 494 135 3 146 0 150 150 133 143 481 498 294A00 25 2 33 5 69 9 80 6 a 149 8 163 2 150 175 146 158 436 447 153 6 167 0 175 175 150 162 440 451 288A00 294A00 32 7 43 5 90 7 104 7 175 8 193 3 200 200 170 186 547 575 179 6 197 1 200 200 174 190 551 579 291A00 294A00 37 6 50 0 104 3 120 3 192 8 182 7 200 200 185 204 575 607 196 6 186 5 200 200 190 208 579 611 NONE 75 3 90 80 402 79 1 100 85 406 291A00 12 4 16 5 34 4 39 7 118 3 124 9 125 125 120 126 436 442 122 1 128 7 125 150 124 130 440 446 288A00 291A00 19 9 26 5 55 3 63 8 144 4 155 1 150 175 144 154 513 530 148 2 158 9 150 175 148 158 517 534 294A00 25 2 33 5 69 9 80 6 162 7 176 1 175 200 161 173 472 483 166 5 179 9 175 200 165 177 476 487 288A00 294A00 32 7 43 5 90 7 104 7 188 7 206 2 200 225 184 201 583 611 192 5 210 0 200 225 189 205 587 615 291A00 294A00 37 6
10. thalpy sensor and the terminal on the enthalpy controller Indoor Air Quality CO sensor The indoor air quality sensor accessory monitors space carbon dioxide CO2 levels This information is used to monitor IAO levels Several types of sensors are available for wall mounting in the space or in return duct with and without LCD display and in combination with space temperature sensors Sensors use infrared technology to measure the levels of CO present in the space air The CO sensors are all factory set for a range of 0 to 2000 ppm and a linear mA output of 4 to 20 Refer to the instructions supplied with the CO sensor for electrical requirements and terminal locations See Fig 42 for typical CO sensor wiring schematic 0 10VDC OSIG COM 4 20mA NC ALARM COM RELAY NO CONTACTS H G 24 VAC 9 OR Ing 24VDC C08635 Fig 42 Indoor Outdoor Air Quality CO2 Sensor 33ZCSENCO2 Typical Wiring Diagram To accurately monitor the quality of the air in the conditioned air space locate the sensor near a return air grille if present so it senses the concentration of CO2 leaving the space The sensor should be mounted in a location to avoid direct breath contact Do not mount the IAQ sensor in drafty areas such as near supply ducts open windows fans or over heat sources Allow at least 3 ft 0 9 m between the sensor and any corner Avoid mounting the se
11. 225 16 in 567 mm dimension to float if necessary iT loo L T eey _ 15 1 2 8 5 8 C10003 Fig 6 Retrofit Installation Dimensions If the alternative condensate drain location through the bottom of the unit is used in conjunction with a retrofit curb the hole in the curb must be moved 12 5 in 320 mm towards the end of the unit Although unit is weatherproof guard against water from higher level runoff and overhangs Remove all shipping materials and top skid Remove extra center post from the condenser end of the unit so that the condenser end of the unit matches Fig 16 18 Recycle or dispose of all shipping materials Step 7 Convert to Horizontal and Connect Ductwork when required Unit is shipped in the vertical duct configuration Unit without factory installed economizer or return air smoke detector option may be field converted to horizontal ducted configuration using accessory CRDUCTCVO001A00 To convert to horizontal configuration remove screws from side duct opening covers and remove covers Discard the supply duct cover Install accessory CRDUCTCV001A00 to cover the vertical supply duct opening Use the return duct cover removed from the end panel to cover the vertical return duct opening Field supplied flanges should be attached to horizontal duct openings and all ductwork should be secured to the
12. Unscrew the two screws holding the Return Air Sensor detector plate See Fig 53 Save the screws 2 Remove the Return Air Sensor and its detector plate 3 Rotate the detector plate so the sensor is facing out wards and the sampling tube connection is on the bot tom See Fig 54 4 Screw the sensor and detector plate into its operating position using screws from Step 1 Make sure the sampling tube connection is on the bottom and the ex haust tube is on the top See Fig 54 5 Connect the flexible tube on the sampling inlet to the sampling tube on the basepan Flexible Exhaust Tubes Sampling Tube C10331 Fig 53 Return Air Detector Shipping Position Sampling Tube C10332 Fig 54 Return Air Sensor Operating Position Additional Application Data Refer to Catalog No HKRNKA 1XA for discussions on additional control features of these smoke detectors including multiple unit coordination 548J 14D 29 548J 14D Table 4 Unit Wire Fuse or HACR Breaker Sizing Data y oO HTR NO C O or UNPWR C O FLA FUSE or DISC SIZE FUSE or DISC SIZE HACR HACR NONE 65 66 2 80 70 291A00 12 4 16 5 34 4 39 7 105 4 112 0 110 125 105 111 400 406 109 2 115 8 110 125 109 115 404 410 288A00 291A00 19 9 26 5 55 3 63 8 131 5 142 2 150 150 129 139 477 494 135 3 146 0 150 150 133 143 481 498 294A00 25 2 33 5 69 9 80 6 39 149 8 163 2 150 175 146 158 436 447
13. attach the accessory thru the base service connections to the basepan in accordance with the accessory installation instructions Slab Mount Horizontal Units Only Provide a level concrete slab that extends a minimum of 6 in 150 mm beyond unit cabinet Install a gravel apron in front of condenser coil air inlet to prevent grass and foliage from obstructing airflow NOTE Horizontal units may be installed on a roof curb if required Alternate Unit Support In Lieu of Curb or Slab Mount A non combustible sleeper rail can be used in the unit curb support area If sleeper rails cannot be used support the long sides of the unit with a minimum of 3 equally spaced 4 in x 4 in 102 mm x 102 mm pads on each side 548J 14D section C C section D D ALT CONDENSATE DRAIN OPENING FOR FIELD SUPPLIED COUNTER FLASHING FIELD SUPPLIED 548J 14D TYPICAL 4 SIDES RIGID INSULATION FIELD SUPPLIED P O BOX 480 TECHNOLOGIES SYRACUSE NY 13221 DETAIL E Pu DETAIL E a aou rie zum SEG to BA M zz oa ES 25 Sa zo 2 5 ES Ic E E o EI a EI a a a m 2 a EN t view A A E z z 2
14. flanges Insulate and weatherproof all external ductwork joints and roof or building openings with counter flashing and mastic in accordance with applicable codes Do not cover or obscure visibility to the unit s informative data plate when insulating horizontal ductwork REMOVABLE HORIZONTAL RETURN DUCT OPENING COVER REMOVABLE HORIZONTAL SUPPLY DUCT OPENING COVER C06108 Fig 7 Horizontal Conversion Panels Step 8 Install Outside Air Hood Economizer Hood Removal and Setup Factory Option 1 The hood is shipped in knock down form and located in the return air compartment It is attached to the economizer using two plastic tie wraps 2 To gain access to the hood remove the filter access panel See Fig 8 3 Locate and cut the 2 plastic tie wraps being careful to not damage any wiring See Fig 9 4 Carefully lift the hood assembly through the filter access opening and assemble per the steps outlined in Economizer Hood and Two Position Hood on page 10 DA p ACCESS PANEL AA wr COIL ACCESS PANEL EB C10004 Fig 8 Typical Access Panel Locations Two Position Damper Hood Removal and Setup Factory Option 1 The hood is shipped in knock down form and assembled to a metal support tray using plastic stretch wrap Located in the return air compartment the assembly s metal tray is attached to the basepan and also attached to the damper using two plasti
15. 50 0 104 3 120 3 205 7 195 6 225 225 200 219 611 643 209 5 199 4 225 225 204 223 615 647 NONE 292A00 289A00 292A00 295A00 289A00 295A00 292A00 295A00 NOM V Ph Hz 208 290 3 60 292A00 289A00 292A00 295A00 289A00 295A00 292A00 295A00 292A00 289A00 292A00 y 295A00 He 289A00 295A00 101 8 110 292A00 295A00 NONE 24 0 E WE 290A00 293A00 296A00 290A00 296A00 293A00 296A00 i HH NONE A 293A00 290A00 293A00 i ae 296A00 i i i 290A00 296A00 i 293A00 296A00 l H 548J 14D 460 3 60 136 EF 152 D 187 168 575 3 60 NONE 293A00 290A00 293A00 296A00 290A00 296A00 293A00 296A00 NOTE See page 32 for table legend and notes 30 Table 4 Unit Wire Fuse or HACR Breaker Sizing Data cont ELEC HTR PE w PWRD C O FLA CRHEATER A00 HACR MCA HACR 67 2 80 71 371 71 0 80 75 375 110 2 116 8 125 125 110 116 405 411 114 0 120 6 125 125 115 121 409 415 136 3 147 0 150 150 134 144 482 499 140 1 150 8 150 175 139 149 486 503 154 6 168 0 175 175 151 164 441 452 158 4 171 8 175 175 156 168 445 456 180 6 198 1 200 200 175 191 552 580 184 4 201 9 200 225 180 196 556 584 197 6 187 5 200 200 191 209 580 612 201 4 191 3 225 200 195 214 584 616 67 2 80 71 371 71 0 80 75 375 110 2 116 8 125 125 110 116 405 411 114 0 120 6 125 125 115 121 409 415 136 3 147 0 1
16. 60 A unit mounted supplementary fuses are required for each heater circuit These fuses are included in accessory Single Point Boxes with power distribution and fuse blocks All fuses on 548J units are 60 A Note that all heaters are qualified for use with a 60 A fuse regardless of actual heater ampacity so only 60 A fuses are necessary Heater Low Voltage Control Connections One or two heaters can be installed in the unit Use the wiring procedure listed below for each heater as determined by the number of stages in the heater Single Stage Heaters Single stage heaters will have an orange and a brown control wire Connect these to the orange and brown wires located on TB4 Two Stage Heaters Two stage heaters will have orange purple red and brown wires The orange and the purple are the control wires and the red and brown wires feed the safety circuit Connect both the orange and the purple wires to the orange wire locations of TB4 Connect the red and brown wires to red and brown wires on TB4 If more than one heater is installed repeat the wiring procedure for the second heater The 3 locations across the top of TB4 do allow a switch to be installed in series with some of the heaters in order to add additional heater control 17 548J 14D 548J 14D NOTE Optional Outdoor Temperature Control at One Heater Stage Move either heater wire to this terminal
17. Wiring the Outdoor Air CO Sensor A dedicated power supply is required for this sensor A two wire cable is required to wire the dedicated power supply for the sensor The two wires should be connected to the power supply and terminals 1 and 2 To connect the sensor to the control identify the positive 4 to 20 mA and ground SIG COM terminals on the OAQ sensor See Fig 42 Connect the 4 to 20 mA terminal to RTU MP J4 5 Connect the SIG COM terminal to RTU MP J4 6 See Fig 45 OAQ Sensor RH Sensor 24 VAC C08463 Fig 45 RTU MP Outdoor CO Sensor 33ZCSENCO2 Connections On 548J 14D units equipped with factory installed Smoke Detector s the smoke detector controller implements the unit shutdown through its NC contact set connected to the unit s CTB input The FSD function is initiated via the smoke detector s Alarm NO contact set The RTU MP controller communicates the smoke detector s tripped status to the BAS building control See Fig 35 RTU MP System Control wiring schematic The Fire Shutdown Switch configuration MENU Config Inputs input 5 identifies the normally open status of this input when there is no fire alarm Connecting Discrete Inputs Filter Status The filter status accessory is a field installed accessory This accessory detects plugged filters When installing this accessory the unit must be configured for filter status by setting MENU Config Inputs input 3 5 8 or 9 to Filter Status and
18. and Fig 5 for additional information 548J 14D Lifting holes are provided in base rails as shown in Fig 5 Refer to rigging instructions on unit A CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage All panels must be in place when rigging Unit is not designed for handling by fork truck Before setting the unit onto the curb recheck gasketing on curb UNIT ON ROOF CURB 914 1371 36 54 SEE DETAIL A PLACE ALL GASKET IN PLACE BEFORE PLACING DETAIL A MAX WEIGHT UNIT LB KG 16 C10281 548J 14D 2015 9 NOTES 1 SPREADER BARS REQUIRED Top damage will occur if spreader bars are not used 2 Dimensions in are in millimeters 3 Hook rigging shackles through holes in base rail as shown in detail A Holes in base rails are centered around the unit center of gravity Use wooden top to prevent rigging straps from damaging unit Fig 5 Rigging Details 7 548J 14D Positioning on Curb For full perimeter curbs CRRFCURBO72A00 and 073A00 the clearance between the roof curb and the front and rear base rails should be in 6 4 mm The clearance between the curb and the end base rails should be 1 2 in 13 mm For retrofit applications with curbs CRRFCURBO003A01 and 4A01 the unit should be position as shown in Fig 6 Maintain the 15 5 in 394 mm and 8 g in 220 mm clearances and allow the
19. be changed The Admin password is 1111 and cannot be changed There is a 10 minute auto logout if a screen is idle Contact your Bryant applications engineer for details on navigation and screen content Virtual BACview Virtual BACview is a freeware computer program that functions as the BACview Handheld The USB Link interface USB L is required to connect a computer to the RTU MP board The link cable connects a USB port to the J12 local access port This program functions and operates identical to the handheld RTU MP Troubleshooting Communication LEDs The LEDs indicate if the controller is speaking to the devices on the network The LEDs should reflect communication traffic based on the baud rate set The higher the baud rate the more solid the LEDs will appear SW3 Protocol Selection PROTOCOL pss 57 BACnet MS TP Modbus Slave N2 Slave NOTE DS Dip Switch BACnet MS TP SW3 example shown Baud Rate Selections BAUDRATE J 80 mao OFF 38 400 OFF 76 800 Select Baud Select Baud O DS1 Select Baud Select Baud Comm Sef fo Option Set to MSTP 38 4k Unused Port master baud LII 113 OFF ON Protocol Selector DIP Switches C07166 Fig 47 RTU MP SW3 Dip Switch Settings 25 548J 14D 548J 14D LOCAL ACCESS PORT RNET 12 VDC e Rnet i Rnet b GND Protocol Selector RTU MP Cable C07170 Fig 48 BACview Handheld C
20. clear plastic cover permits visual inspections without having to disassemble the sensor The cover attaches to the sensor housing using four captive screws and forms an airtight chamber around the sensing electronics Each sensor includes a harness with an RJ45 terminal for connecting to the controller Each sensor has four LEDs for Power Trouble Alarm and Dirty and a manual test reset button on the left side of the housing Duct smoke sensor controller Conduit nuts ram supplied by installer Terminal block cover Controller housing and electronics 8 Conduit couplings supplied by installer S Cover gasket Ordering option a Controller cover 548J 14D Trouble Alarm Power Test reset switch C08208 Duct smoke sensor s Exhaust tube Exhaust gasket 6 Sensor housing and electronics oF See Detail A Intake _ bs gasket b E Cover gasket ordering option m N TSD CO2 2 S ordering option Ne Plug ensor cover 28 S e Sampling tube ordered separately s o Coupling bs P Detail A 6 S 7 e Magnetic c test reset switch ka SOOO smn Alarm L Power Trouble L Dirty Fig 50 Smoke Detector Sensor 008209 27 548J 14D Air is introduced to the duct smoke detector sensor s sensing chamber through a sampling tube that ext
21. cover unit informative plate if mounting the disconnect on the unit cabinet Units with Factory Installed Disconnect The factory installed option disconnect switch is located in a weatherproof enclosure located under the main control box The manual switch handle is accessible through an opening in the access panel Discard the factory test leads see Fig 22 The factory disconnect is an 80A disconnect Units Without Disconnect Option TB1 l l l l l l l keeda ade I Disconnect l per I NEC I L1 L2 L3 208 230 3 60 460 3 60 575 3 60 Units With Disconnect Option Factory Switch Wiring Disconnect factory test leads discard C10015 Fig 22 Power Wiring Connections Convenience Outlets A WARNING ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in personal injury or death Units with convenience outlet circuits may use multiple disconnects Check convenience outlet for power status before opening unit for service Locate its disconnect switch if appropriate and open it Tag out this switch if necessary Two types of convenience outlets are offered on 548J 14D models non powered and unit powered Both types provide a 125 volt GFCI ground fault circuit interrupter duplex receptacle rated at 15 A behind a hinged waterproof access cover located on the panel beneath the control box See Fig 23
22. normally open N O or normally closed N C Input 8 or 9 is recommended for easy of installation Refer to Fig 33 and Fig 35 for wire terminations at J5 Fan Status The fan status accessory is a field installed accessory This accessory detects when the indoor fan is blowing air When installing this accessory the unit must be configured for fan status by setting MENU Config Inputs input 3 5 8 or 9 to Fan Status and normally open N O or normally closed N C Input 8 or 9 is recommended for easy of installation Refer to Fig 33 and Fig 35 for wire terminations at J5 Remote Occupancy The remote occupancy accessory is a field installed accessory This accessory overrides the unoccupied mode and puts the unit in occupied mode When installing this accessory the unit must be configured for remote X occupancy by setting MENU Config Inputs input 3 5 8 or 9 to Remote Occupancy and normally open N O or normally closed N C Also set MENU Schedules occupancy source to DI on off Input 8 or 9 is recommended for easy of installation Refer to Fig 33 and Table 2 for wire terminations at J5 24 Power Exhaust output Connect the accessory Power Exhaust contactor coil s per Fig 46 Power Exhaust CTB C10362 Fig 46 RTU MP Power Exhaust Connections Space Relative Humidity Sensor The RH sensor is not used with 548J 14D models at this time Communication Wiring Protocols General Protocols are
23. open See Fig 24 On a unit without a unit mounted disconnect connect the source leads to the main terminal block TB1 If the convenience outlet transformer is connected to the line side of a field disconnect the conduit provided with the unit must be used to protect the wire as they are routed from the transformer to the field disconnect The end of the conduit with the straight connector attaches to the field disconnect The other end does not need to connect o 13 548J 14D 548J 14D the transformer however the conduit must be routed so that all wiring is either in the conduit or behind the access panel If the convenience outlet transformer is connected to the line side of the factory disconnect option route the wires through the web bushing located on the bottom of the disconnect box For the load side wiring to the factory option disconnect route the wires through the hole on the right side of the disconnect Be sure to create a drip loop at least 6 long Duty Cycle the unit powered convenience outlet has a duty cycle limitation The transformer is intended to provide power on an intermittent basis for service tools lamps etc it is not intended to provide 15 amps loading for continuous duty loads such as electric heaters for overnight use Observe a 5046 limit on circuit loading above 8 amps i e limit loads exceeding 8 amps to 30 minutes of operation every hour Test the GFCI receptacle by pressing th
24. the unit Treat all units as electrically energized until the convenience outlet power is also checked and de energization is confirmed Observe National Electrical Code Article 210 Branch Circuits for use of convenience outlets Installing Weatherproof Cover A weatherproof while in use cover for the factory installed convenience outlets is now required by UL standards This cover cannot be factory mounted due its depth it must be installed at unit installation For shipment the convenience outlet is covered with a blank cover plate The weatherproof cover kit is shipped in the unit s control box The kit includes the hinged cover a backing plate and gasket DISCONNECT ALL POWER TO UNIT AND CONVENIENCE OUTLET Remove the blank cover plate at the convenience outlet discard the blank cover Loosen the two screws at the GFCI duplex outlet until approximately 2 in 13 mm under screw heads are exposed Press the gasket over the screw heads Slip the backing plate over the screw heads at the keyhole slots and align with the gasket tighten the two screws until snug do not over tighten Mount the weatherproof cover to the backing plate as shown in Fig 25 Remove two slot fillers in the bottom of the cover to permit service tool cords to exit the cover Check for full closing and latching COVER WHILE IN USE WEATHERPROOF RECEPTACLE NOT INCLUDED reason T K y x
25. thru the bottom connections accessory is used refer to the accessory installation instructions for information on routing power and control wiring Heat Anticipator Settings Set heat anticipator settings at 0 14 amp for the first stage and 0 14 amp for second stage heating when available C10018 Fig 28 Thermostat Wire Routing Electric Heaters 548J 14D units may be equipped with field installed accessory electric heaters The heaters are modular in design with heater frames holding open coil resistance wires strung through ceramic insulators line break limit switches and a control contactor One or two heater modules may be used in a unit Heater modules are installed in the compartment below the indoor supply fan outlet Access is through the indoor access panel Heater modules slide into the compartment on tracks along the bottom of the heater opening See Fig 29 A CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage Not all available heater modules and single point boxes may be used in every unit Use only those heater modules that are UL listed for use in a specific size unit Refer to the label on the unit cabinet for the list of approved heaters and single point boxes 16 SINGLE POINT BOX HEATER COVERS MANUAL RESET LIMIT SWITCH DISCONNECT MOUNTING LOCATION
26. 2 8 E Z 2 5 I z Je e e a S ta eo e 2 ro a s E E e g TE PI a o ac oe 8 8 Ss 2 85 8 EP 2 3 2 om a oz z Ss S e 3 5 Eo zm S5 5 Si v 5 tx Lo Eos SZ 0 5 25 z S 5 S 2 a zo won 2 So 55 Ez Dx r LN eF iz ii on Bo a i S S EIS oc So d SL o n 2s E Ts e SE Rcs a a 2 Se sz ud ot 1 00 E ao n 32v8 Be z3 22 a E E T O E EN H i 2 E v o la lt 2 5 I zu 1 00 u ux z z Ez mo 5 e 28 eg e mu 5s E Ec i EN 5 e e o a0 z i em T i 8 Sz PR ez RIEN aS 55 ai ne evo o i M cs 55 Z 8 o DE mx M Tw Kid we m Ex M je 55 k3 ee P s eo B 5 m E 2z LL a a me ei y 2 agl S 25 g ze 32 lt a 8 2 co 25 2 2 x8 NS S IZ VE aS ot gt EX l Sls s s m 2 8 5 E A lt 35 5 5 T5 So Ta 2 2 5 e eo zz 52585 Ze 5 2S oo s2 so eee eo i gt Le FE IG E amp 1 3 S 5 s z ES ots C10365 Fig 3 Roof Curb Details 6 MAXIMUM ALLOWABLE DIFFERENCE IN MM C10001 Fig 4 Unit Leveling Tolerances Step 5 Field Fabricate Ductwork Cabinet return air static pressure a negative condition shall not
27. 3 m use no 14 AWG insulated wire 35 C minimum All wire sizes larger than no 18 AWG cannot be directly connected to the thermostat and will require a junction box and splice at the thermostat Typical Central Thermostat Terminal Connections Board X 9 a55 eee wi DEBERE dE Y2 eee Yi R Note 1 Typical multi function marking Follow manufacturer s configuration instructions to select Y2 Do not configure for O output u do00zuzmzimdd Note 2 W2 connection not required on units without electric heating Field Wiring C09012 Fig 27 Typical Low Voltage Control Connections 15 548J 14D 548J 14D Unit without Thru Base Connection Kit Pass the thermostat control wires through the bushing on the unit end panel Route the wire through the snap in wire tie and up to the web bushing near the control box Route the wire through the bushing and into the bottom left side of the control box after removing one of the two knockouts in the corner of the box Using a connector at the control box to protect the wire as it passes into the control box Pull the wires over to the terminal strip at the upper left corner of the Central Terminal Board CTB Use the connector at the control box and the wire tie to ensure that the thermostat wire is tight and will not be damaged by contact with the condenser coil See Fig 28 NOTE If
28. 50 150 134 144 482 499 140 1 150 8 150 175 139 149 486 503 154 6 168 0 175 175 151 164 441 452 158 4 171 8 175 175 156 168 445 456 180 6 198 1 200 200 175 191 552 580 184 4 201 9 200 225 180 196 556 584 197 6 187 5 200 200 191 209 580 612 201 4 191 3 225 200 195 214 584 616 80 1 100 86 407 83 9 100 90 411 123 1 129 7 125 150 125 131 441 447 126 9 133 5 150 150 130 136 445 451 149 2 159 9 150 175 149 159 518 535 153 0 163 7 175 175 154 163 522 539 167 5 180 9 175 200 166 178 477 488 171 3 184 7 175 200 170 183 481 492 193 5 211 0 200 225 190 206 588 616 197 3 214 8 200 225 194 210 592 620 210 5 200 4 225 225 206 224 616 648 214 3 204 2 225 225 210 228 620 652 NOM V Ph Hz NONE 291A00 12 4 16 5 34 4 39 7 288A00 291A00 19 9 26 5 55 3 63 8 294A00 25 2 33 5 69 9 80 6 288A00 294A00 32 7 43 5 90 7 104 7 291A00 294A00 37 6 50 0 104 3 120 3 NONE 291A00 12 4 16 5 34 4 39 7 288A00 291A00 19 9 26 5 55 3 63 8 294A00 25 2 33 5 69 9 80 6 288A00 294A00 32 7 43 5 90 7 104 7 291A00 294A00 37 6 50 0 104 3 120 3 NONE 291A00 12 4 16 5 34 4 39 7 288A00 291A00 19 9 26 5 55 3 63 8 294A00 25 2 33 5 69 9 80 6 288A00 294A00 32 7 43 5 90 7 104 7 291A00 294A00 37 6 50 0 104 3 120 3 NONE 292A00 289A00 292A00 295A00 289A00 295A00 292A00 295A00 NONE 292A00 289A00 292A00 295A00 T
29. 548J 14D SINGLE PACKAGE ROOFTOP HEAT PUMP WITH WITH PURON R 410A REFRIGERANT SIZE 14 Installation Instructions NOTE Read the entire instruction manual before starting the installation TABLE OF CONTENTS SAFETY CONSIDERATIONS 1 INSTALLATION bo ibd Oe hee nee vb UY bes 4 Jobsite Survey eee eee eee eee 4 Step 1 Plan for Unit Location 4 Roof Mount i b ba ph bed ARS 5 Step 2 Plan for Sequence of Unit Installation 5 Curb Mount 5 5 Frame Mount 5 Step 3 Inspect 5 Step 4 Provide Unit Support 2 5 Slab Mount Horizontal Units Only 2 Alternate Unit Support 2 Step 5 Field Fabricate Ductwork 7 For Units with Accessory Electric Heaters T Step 6 Rig and Place Unit 7 Step 7 Convert to Horizontal amp Connect Ductwork 8 Step 8 Install Outside Air Hood 8 Economizer Hood Removal and Setup 8 Two Position Damper Hood Removal and Setup 9 Economizer Hood and Two Position Hood 10 Step 9 Install External Condensate Trap and Line 10 Step 10 Ma
30. Al 4 20 ma Safety Chain Feedback Compressor Safety Fire Shutdown 24 VAC Enthalpy Switch DI 24 VAC Humidistat Input Status DI 24 VAC CONFIGURABLE INPUTS Space Relative Humidity Al 4 20 ma Outside Air Relative Humidity Al 4 20 ma Supply Fan Status DI 24 VAC DI 4 VAC OUTPUTS DO Relay 24VAC DO Relay 24VAG l l DI 24 VAC DI 24 VAC D J1 10 J2 6 7 J5 7 8 VS ree ye J a 548J 14D LEGEND Analog Input AO Analog Output DI Discrete Input DO Discrete Output These inputs if installed take the place of the default input on the specific channel according to schematic Parallel pins J5 1 J2 6 5 3 J1 10 J5 5 J1 2 are used for field installation The RTU MP controller requires the use of a Bryant space sensor A standard thermostat cannot be used with the RTU MP system Supply Air Temperature SAT Sensor On FIOP equipped 548J 14D unit the unit is supplied with a supply air temperature SAT sensor 33ZCSENSAT This sensor is a tubular probe type approx 6 inches 12 7 mm in length It is a nominal 10 k ohm thermistor EN SUPPLY AIR The SAT is factory wired The SAT probe is wire tied to TEMPERATURE CORE D SENSOR A SUPPLY AIR RETURN AIR NS the supply air opening on the horizontal opening end in ME Nee 7 its shippi ition R th for installation Z NY Re posiioa the Sensor di the flange
31. CONNECTION SIZES CRBTHPWRO0SA00 006400 001400 B 2 1 2 641 DIA POWER SUPPLY HOLE ACCESSORY THREADED WIRE REQ D HOLE D 7 8 221 DIA FIELD CONTROL WIRING HOLE la CONDUTI SLEE USE U 8325 MAE Acc 1 8 22 21 E 3 4 14 NPT CONDENSATE DRAIN P F 7 8 1221 DIA FIELD CONVENIENCE OUTLET HOLE Y Te POWER 1 2 138 11 1 27 ACC 1 8 022 21 006 x ra 24v 7 8 22 21 Y 11 2 POWER 2 50 8 W V2 acc 1 8 22 21 007 X 1 27 24v 1 8 022 2 Y 2 POWER 2 172 63 5 FOR THRU THE BASEPAN FACTORY OPTION FITTINGS FOR X 8 Y ARE PROVIDED AS SPECIFIED ON 006 C09895 548J 14D STD UNIT CORNER CORNER CORNER CORNER UNIT WEIGHT WEIGHT A WEIGHT B WEIGHT C WEIGHT 0 sil LBS KG LBS KG LBS KG LBS KG LBS KG X Y 1 548J 14 1370 623 369 168 361 164 316 144 324 141 57 1 2 14601 29 1 2 750 24 610 STANDARD UNIT WEIGHT IS WITHOUT ELECTRIC HEAT AND WITHOUT PACKAGING FOR OTHER OPTIONS AND ACCESSORIES REFER TO THE PRODUCT DATA CATALOG CORNER A CORNER B CORNER D CORNER C tJ I 1 d Oo jo ii FRONT C10364 Fig 1 Unit Dimensional Drawing Size 14 Unit cont INSTALLATION Jobsite Survey Complete the following checks b
32. ENSOR pcv RED BRN VIO 1 ETOR 9 e max 12 08 i KS BRN TAQ Vv Tov 6 DAMPER Be Qo Ofer 1 i 09 i NE FIOP ACCY i A01 ocv GRA wor Te i ECONOMI ZER RED OAT SENSOR GRA BI GRA ud S PNK BLU 19 ENTHALPY SENSOR so e YEL Nor ust 19e 5 e Vica T BLK 50 N TOV 3 4 ORN i 103 103 10 sos RED LA YEL 8 5 SR FREE eet 8 wep ACCESSORY aid 2 RAT ENTHALPY SENSOR 6200 8 i oen 2 DE d 4 sig T BLK XS BLK 5 1 ja l 1 mm BRN 4 BRN e FCONGMTZER NOTES GRA TAN RED 2 gt RED O GRA 620 OHM 1 WATT 5 RESISTER SHOULD BE REMOVED ONLY WHEN i al yz np USING DEEP ERENLIAL ENTHALPY OR DRY BULB 5 a EPERATE FIELD SUPPLIED 24v TRANSFORMER IS USED FOR THE GRA a GRA OGRA TAQ SENSOR POWER SUPPLY IT CANNOT HAVE THE SECONDARY OF TH FN 51 5 ESL TRANSFORMER GROUNDED 9 f 3 FOR FIELD INSTALLED REMOTE MINIMUM POSITION POT ORN ORN DDC REMOVE BLACK WIRE JUMPER BETWEEN P AND ND 1 9 9 OPTIONS CONTROL MINIMUM POSITION POT TO THE MINIMUM POSITION 19 4 OT USING CO2 SENSOR THE DCV MAX POTENTIOMETER MUST NOT USED PNK ONLY BE FULLY CLOSED FOR THE MINIMUM POSITION POTENTIOMETER TO D pp FUNCTION PROPERLY L _5 GRAY TAN WIRES ARE PART OF THE POWER EXHAUST ACCESSORY i N GRA TAN O PWR EXHAUST H n 1 TO ACCESSORY m Unit Without Economizer or Economizer SEE ECONONTZER NOTE 5 2 Position Damper 2 Position Da
33. Fig 20 Mounting Position for Field Disconnects up to 100A All units except 208 230 v units are factory wired for the voltage shown on the nameplate If the 208 230 v unit is to be connected to a 208 v power supply the control transformer must be rewired by moving the black wire with the 4 in female spade connector from the 230 v connection and moving it to the 200 v l 4 in male terminal on the primary side of the transformer Refer to unit label diagram for additional information Field power wires are connected to the unit at line side pressure lugs at the main terminal block TB1 or at factory installed option non fused disconnect switch Max wire size is 2 AWG copper only See Fig 22 NOTE TEST LEADS Unit may be equipped with short leads pigtails on the field line connection points off the optional disconnect switch These leads are for factory run test purposes only remove and discard before connecting field power wires to unit connection points Make field power connections directly to line connection pressure lugs only A WARNING FIRE HAZARD Failure to follow this warning could result in intermittent operation or performance satisfaction Do not connect aluminum wire between disconnect switch and furnace Use only copper wire See Fig 21 ELECTRIC DISCONNECT No SWITCH COPPER WIRE ONLY Fig 21 Disconnect Switch and Unit d A93033 All Units All field wiri
34. R 20 1 2 15221 SEE a THRU THE BASE REMOVAOLE 591 CHART 10 1 8 1259 15 44 1 4 14 16 1 4 3801 11124 TOP 356 412 4 1 3 8 ELECTRICAL By DISCONNECT Q LOCATION i P T CONTROL BOX T fiat ACCESS PANEL M dp pri DESER ELECTRIC HEAT INDOOR BLOWER 26 1 4 ACCESS PANEL ACCESS PANEL q colt B 51 3 8 k 16671 11456 3 3 4 M 19081 OPTIONAL 1 i FACTORY PTIONAL HANDLE INSTALLED FACTORY id DISCONNECT INSTALLED I CONVENIENCE H OUTLET HOO LJ tJ OO zT ne m L I 18 374 3 4 tael 195 BASE RAIL 115 1 8 63 3 8 4 WIDTH 2942 1609 LEFT FRON M 34 12 FILTER ECONOMIZER ACCESS PANEL 8161 DISPOSABLE FILTERS OUTSIDE AIR E 510 H 46 1 8 COMPRESSOR CONDENSER CONDENSATE 11721 ACCESS COIL DRAIN P PANEL 1 INDOOR COIL T 1 3 4 7 ES ACCESS PANEL 14 5 8 18061 IE 13131 SUPPLY AIR andi HORIZONTAL iR d N I CN Son L ss Lens Eesi 6 1 8 DEN eet 1154 HANDLE usa MM M2 PRESSURE GAUGE MANIFOLD BACK 110581 BAROMETRIC POWER ACCESS SLO SUPPLY RETURN RELIEF EXHAUST AIR 4 AIR t FLOW RIGH Vertical Connections Economizer b 4 3 t 1302 81 1 4 32 344 2064 9 1832 51 23 114 HORIZONTAL 1590 51 ECONOMIZER HOOD OPTIONAL 51 1 8 m 112981 RETURN a AIR 46 1 16 11179 SUPPLY AIR SUPPLY RETURN AIR ATR Horizontal Connections Economizer THRU THE BASE CHART THESE HOLES REQUIRED FOR USE
35. R 289A00 295A00 292A00 295A00 3 8 208 290 3 60 548J 14D 3 8 8 548J 14D 460 3 60 NONE 292A00 289A00 292A00 295A00 289A00 295A00 292A00 295A00 NONE 293A00 290A00 293A00 296A00 290A00 296A00 293A00 296A00 NONE 293A00 290A00 293A00 296A00 290A00 296A00 293A00 296A00 NONE 293A00 290A00 293A00 296A00 290A00 296A00 293A00 296A00 8 3 8 3 8 575 3 60 3 8 NOTE See page 32 for table legend and notes 31 548J 14D Legend and Notes for Table 4 LEGEND Example Supply voltage is 230 3 60 BRKR Circuit breaker AE CO Convenient outlet AB 224v DISC Disconnect C US L BC 231 v FLA Fullload amps AC 226 v IFM Indoor fan motor LRA Locked rotor amps 224 231 226 681 MCA Minimum circuit amps Average Voltage 3 PE Power exhaust PWRD CO Powered convenient outlet 227 NOTES CO Unpowered convenient gunet Determine maximum deviation from average voltage AB 227 224 3v BC 231 227 4v AC 227 226 1 v Maximum deviation is 4 v Determine percent of voltage imbalance 1 In compliance with NEC requirements for multimotor and combination load equipment refer to NEC Articles 430 and 440 the overcurrent protective device for the unit shall be fuse or HACR breaker Canadian units may be fuse or circuit breaker 2 Unbalanced 3 Phase Supply Voltage Never operate a motor where a phase imbalance in supply Vol
36. c tie wraps gt Remove Hood Parts L Cut Plastic Ties P 2 Places Economizer 2 To gain access to the hood remove the filter access panel See Fig 8 3 Locate the 2 screws holding the metal tray to the basepan and remove In order to remove the screws it may be necessary to remove the panel underneath the two position damper Remove the two screws Locate and cut the 2 plastic tie wraps securing the assembly to the damper See Fig 10 Be careful to not damage any wiring or cut tie wraps securing any wiring 4 Carefully lift the hood assembly with metal tray through the filter access opening and assemble per the steps outlined in Economizer Hood and Two Position Hood on page 10 C10005 Fig 9 Economizer Wiring 548J 14D 5 If removed reattach the panel under the damper Hood Parts Screws for Metal Tray Qty 2 C10006 Fig 10 Damper Assembly 548J 14D Economizer Hood and Two Position Hood NOTE If the power exhaust accessory is to be installed on the unit the hood shipped with the unit will not be used and must be discarded Save the aluminum filter for use in the power exhaust hood assembly 1 The indoor coil access panel will be used as the top of the hood If the panel is still attached to the unit re move the screws along the s
37. cated ductwork at unit duct openings Install outdoor air hood Install condensate line trap and piping Make electrical connections Install other accessories Frame mounted installation Frame mounted applications generally follow the sequence for a curb installation Adapt as required to suit specific installation plan Step 3 Inspect Unit Inspect unit for transportation damage File any claim with transportation agency Confirm before installation of unit that voltage amperage and circuit protection requirements listed on unit data plate agree with power supply provided Step 4 Provide Unit Support Roof Curb Mount Accessory roof curb details and dimensions are shown in Fig 3 Assemble and install accessory roof curb in accordance with instructions shipped with the curb NOTE The gasketing of the unit to the roof curb is critical for a watertight seal Install gasket supplied with the roof curb as shown in Fig 5 Improperly applied gasket can also result in air leaks and poor unit performance Curb should be level This is necessary for unit drain to function properly Unit leveling tolerances are show in Fig 4 Refer to Accessory Roof Curb Installation Instructions for additional information as required Install insulation cant strips roofing felt and counter flashing as shown Ductwork must be attached to curb and not to the unit If electric and control wiring is to be routed through the basepan
38. conduit between disconnect and control box 2 Install power lines to terminal connections as shown in Fig 22 Field Control Wiring The 548J 14D unit requires an external temperature control device This device can be a thermostat emulation device provided as part of a third party Building Management System Thermostat Install a Bryant approved accessory 2 stage Cooling Heating thermostat according to installation instructions included with the accessory The 548J 14D models do not require a thermostat with an O function to control the reversing valve operation If using an electronic thermostat configure it for non heat pump operation Locate the thermostat accessory on a solid wall in the conditioned space to sense average temperature in accordance with the thermostat installation instructions If the thermostat contains a logic circuit requiring 24 v power use a thermostat cable or equivalent single leads of different colors with minimum of seven leads If the thermostat does not require a 24 v source no C connection required use a thermostat cable or equivalent with minimum of six leads Check the thermostat installation instructions for additional features which might require additional conductors in the cable For wire runs up to 50 ft 15 m use no 18 AWG American Wire Gage insulated wire 35 C minimum For 50 to 75 ft 15 to 23 m use no 16 AWG insulated wire 35 C minimum For over 75 ft 2
39. d through harnesses connected to the CTB Field connections for RTU MP sensors will be made at the Phoenix connectors on the RTU MP board The factory installed RTU MP control includes the supply air temperature SAT sensor The outdoor air temperature OAT sensor is included in the FIOP accessory EconoMi er 2 package Refer to Table 2 RTU MP Controller Inputs and Outputs for locations of all connections to the RTU MP board c N avs 9 3nduj 2 3nduj Puy _ sod NO23 Adjeuju3 8 3nduj MWS sindu pug duj ajqeunByuog MI OVA pz duj ejqean amp Byuo2 548J 14D jndy ajqeanByuog OVA bz 1815 6 3nduj OVA vZ M OVA vz mys jn MI g in le ia le c a AO 2 GND 0 10V only po s e __ gt Humidistat DO 7 Spare T LEED auso J11 3 i le I ie m le ia J14 Protocol Selector EDS as Input_10 T 55 Accy BACnet or 0 or Net In 11 T 56 Ac put_11 cy Comm 007129 Fig 33 RTU MP Multi Protocol Control Board z lt 1 p e dro Ege OFR EHR l mran 4 RTU OPEN Zen iL FIOP za L
40. e TEST button on the face of the receptacle to trip and open the receptacle Check for proper grounding wires and power line phasing if the GFCI receptacle does not trip as required Press the RESET button to clear the tripped condition SCHEMATIC CONVENIENCE OUTLET RED YEL BLU GRA d BLU GRA CONNECT PER RED LOCAL CODE TRAN4 YEL 240V RED YEL BLU GRA B amp UH S TRAN4 RED GRA aD Lo aD 600V 2 add 12 Q3 Hi 82 8LK e WHT SECONDARY Luu 120V GROUND FAULT s p INTERRUPTER CONVENIENCE OUTLET Q9 GD L GFI CO ILE GRN YEL y 3 d C GRN YEL SECONDARY d fl 120V Eur wur SWITCH FUSE BLK 5 I 15 AMP C08283 UNIT CONNECT PRIMARY TRANSFORMER VOLTAGE AS CONNECTIONS TERMINALS 208 L1 RED YEL H1 H3 230 L2 BLU GRA H2 H4 L1 RED 460 480 Splice BLU YEL L2 GRA L1 RED HI Fig 24 Unit Powered Convenience Outlet Wiring Fuse on power type The factory fuse is a Bussman Fusetron T 15 non renewable screw in Edison base type plug fuse 4 WARNING ELECTRICAL OPERATION HAZARD Failure to follow this warning could result in personal injury or death Using unit mounted convenience outlets Units with unit mounded convenience outlet circuits will often require that two disconnects be opened to de energize all power to
41. efore installation 1 Consult local building codes and the NEC National Electrical Code ANSI NFPA 70 for special installa tion requirements 2 Determine unit location from project plans or select unit location 3 Check for possible overhead obstructions which may interfere with unit lifting or rigging Step 1 Plan for Unit Location Select a location for the unit and its support system curb or other that provides for at least the minimum clearances required for safety This includes the clearance to combustible surfaces unit performance and service access below around and above unit as specified in unit drawings See Fig 2 NOTE Consider also the effect of adjacent units Unit may be installed directly on wood flooring or on Class A B or C roof covering material when roof curb is used Do not install unit in an indoor location Do not locate air inlets near exhaust vents relief valves or other sources of contaminated air Required bottom condensate drain connection Otherwise 36 914mm for condensate connection C09897 Fig 2 Service Clearance Dimensional Drawing Although unit is weatherproof avoid locations that permit water from higher level runoff and overhangs to fall onto the unit Select a unit mounting system that provides adequate height to allow for removal and disposal of frost and ice that will form during the heating defrost mode as well as allow installation of condensate trap
42. efrigerant before system repair or final unit disposal Wear safety glasses and gloves when handling refrigerants Keep torches and other ignition sources away from refrigerants and oils A CAUTION CUT HAZARD Failure to follow this caution may result in personal injury Sheet metal parts may have sharp edges or burrs Use care and wear appropriate protective clothing safety glasses and gloves when handling parts and servicing heat pump units 61 1 8 15521 52 118 13441 ECONOMIZER HOOD VERTICAL TWO POSITION DAMPER HOOD VERTICAL AND HORIZONTAL OPTIONAL 7381 Fig 1 Unit Dimensional Drawing Size 14 Unit 3 12 5 8 NOTES ji 13 5 Ate DAMENSIONS ARE i INCHES DIMENSION tu eta Ea N ARE IN MILLIM RETURN AIR 26 m 2 amp CENTER OF GRAVITY VERTICAL 16601 RETURN USES aM AIR 3 gt DIRECTION OF AIR FLOW 22112 CONDENSATE 5731 DRAIN OPENING 195314 44 318 IN BASEPAN j SUPPLY 11126 AIR 41 12 vertical 1055 SUPPLY AI
43. ends into the HVAC duct and is directed back into the ventilation system through a shorter exhaust tube The difference in air pressure between the two tubes pulls the sampled air through the sensing chamber When a sufficient amount of smoke is detected in the sensing chamber the sensor signals an alarm state and the controller automatically takes the appropriate action to shut down fans and blowers change over air handling systems notify the fire alarm control panel etc The sensor uses a process called differential sensing to prevent gradual environmental changes from triggering false alarms A rapid change in environmental conditions such as smoke from a fire causes the sensor to signal an alarm state but dust and debris accumulated over time does not For installations using two sensors the duct smoke detector does not differentiate which sensor signals an alarm or trouble condition Smoke Detector Locations Supply Air The Supply Air smoke detector sensor is located to the left of the unit s indoor supply fan See Fig 51 Access is through the left side blower access panel There is no sampling tube used at this location The sampling tube inlet extends through the side plate of the fan housing into a high pressure area The controller is located on a bracket to the right of the return filter accessed through the lift off filter panel C08245 Fig 51 Typical Supply Air Smoke Detector Sensor Location Re
44. eshooting 25 Smoke Detectors 0 0 eee eee eee eee 27 Systemi socis xa ep bab ed es oe ie eee ak ew 27 Controller 27 Mechs pele genet deat qnn 27 Smoke Detector Locations 4 28 Supply AIT 2e dtt pee det a ors et nen 28 Return Air without Economizer 28 Return Air with Economizer 28 Step 11 Adjust Factory Installed Options 32 Step 12 Install Accessories 33 548J 14D SAFETY CONSIDERATIONS Improper installation adjustment alteration service maintenance or use can cause explosion fire electrical shock or other conditions which may cause personal injury or property damage Consult a qualified installer service agency or your distributor or branch for information or assistance The qualified installer or agency must use factory authorized kits or accessories when modifying this product Refer to the individual instructions packaged with the kits or accessories when installing Follow all safety codes Wear safety glasses and work gloves Use quenching cloths for brazing operations and have a fire extinguisher available Read these instructions thoroughly and follow all warnings or cautions attached to the unit Consult local building codes and appropriate national electrical codes in USA ANSI NFPA70 National Electrical Code NEC in Canada CSA C22 1 for special requirements It is importan
45. exceed 0 35 in wg 87 Pa with economizer or 0 45 in wg 112 Pa without economizer For vertical ducted applications secure all ducts to roof curb and building structure Do not connect ductwork to unit Insulate and weatherproof all external ductwork joints and roof openings with counter flashing and mastic in accordance with applicable codes Ducts passing through unconditioned spaces must be insulated and covered with a vapor barrier If a plenum return is used on a vertical unit the return should be ducted through the roof deck to comply with applicable fire codes For Units with Accessory Electric Heaters All installations require a minimum clearance to combustible surfaces of 1 in 25 mm from duct for first 12 in 305 mm away from unit A CAUTION PROPERTY DAMAGE HAZARD Failure to follow this caution may result in damage to roofing materials Membrane roofs can be cut by sharp sheet metal edges Be careful when placing any sheet metal parts on such roof Step 6 Rig and Place Unit When the unit is ready to be rigged and no longer will be lifted by a fork truck the wood protector under the basepan must be removed Remove 4 screws from each base rail Wood protector will drop to the ground See instructions on the unit base rails Keep unit upright and do not drop Spreader bars are required Rollers may be used to move unit across a roof Level by using unit frame as a reference See Table 1
46. gured for immediate smoke detector shutdown operation additional wiring or modifications to unit terminal board may be necessary to complete the unit and smoke detector configuration to meet project requirements Units equipped with factory optional Return Air smoke detectors require a relocation of the sensor module at unit installation See Completing Installation of Return Air Smoke Sensor on page 29 for details System The smoke detector system consists of a four wire controller and one or two sensors Its primary function is to shut down the rooftop unit in order to prevent smoke from circulating throughout the building It is not to be used as a life saving device Controller The controller see Fig 49 includes a controller housing a printed circuit board and a clear plastic cover The controller can be connected to one or two compatible duct smoke sensors The clear plastic cover is secured to the housing with a single captive screw for easy access to the wiring terminals The controller has three LEDs for Power Trouble and Alarm and a manual test reset button all located on the cover face Sensor The sensor see Fig 50 includes a plastic housing a printed circuit board a clear plastic cover a sampling tube inlet and an exhaust tube The sampling tube when used and exhaust tube are attached during installation The sampling tube varies in length depending on the size of the rooftop unit The
47. ides and bottom of the panel See Fig 11 PANEL X INDOOR N INDOOR COIL S a COIL ACCESS ACCESS PANEL EA PANEL C10007 Fig 11 Indoor Coil Access Panel Relocation 2 Swing out indoor coil access panel and insert the hood sides under the panel hood top Be careful not to lift the panel too far as it might fall out Use the screws provided to attach the hood sides to the hood top Use screws provided to attach the hood sides to the unit See Fig 12 TOP PANEL INDOOR COIL ACCESS PANEL HOOD DIVIDER C10008 Fig 12 Economizer Hood Construction Remove the shipping tape holding the economizer barometric relief damper in place Insert the hood divider between the hood sides See Fig 12 and 13 Secure hood divider with 3 screws on each hood side The hood divider is also used as the bottom filter rack for the aluminum filter 2s 6 BAROMETRIC RELIEF 8 9 Attach the post that separates the filters with the Screws provided Open the filter clips which are located underneath the hood top Insert the aluminum filters into the bottom filter rack hood divider Push the filter into position past the open filter clips Close the filter clips to lock the filters into place See Fig 13 Install the two rain deflectors on the edge of the hood top as shown in Fig 11 DIVIDER OUTSIDE AIR CLEANABLE ALUMINUM FILTER
48. ieme s TA ao iur iie Qi 6 2 UE iem asl n 7 2 NOLLdO o bene ne Qt WHO E E MEABaG Qr eir EIE oer SPEE E ecd I 4 ls nas has zi arainn LO 8 boo pee9 5 2 k Tpbpp or fee LA ABB eee 1805 320 E ALL oov En NMOGLNHS LINQ 1 S 1 eo t wH odu m 1 ae u1 o 03 0 SONILL3S HOLIMS 10 10914011 Quvo8 15083434 0 038 0 30 1N3A39NVHNHV IN3NOdWOO sid o 9 88 49 1 03 xe a oi ae 291 181 Lue LHM 1 5 0 E lotou Lan 1130 S S NO 1V38 3 m QNVOS 1504 134 Quvog ne 1808130 200 4011 140 18 ETE sany 2 t gau T TD RD 038 50 3 83404 4 INVYL J0 lo r ra YOSSFddWOD IYNG ASLS AO09v A0FZ 802 TOYLNOD dWNd 1V3H 010322 iagram D RTU MP System Control Wiring 20 35 Fig Table 2 RTU MP Controller Inputs and Outputs BACnet OBJECT CONNECTION PIN POINT NAME NAME TYPE OF I O NUMBERS INPUTS Space Temperature Sensor Al 10K Thermistor Supply Air Temperature Al 10K Thermistor oases A J20 1 2 J2 1 2 J2 3 4 J20 3 J4 2 3 J4 5 6 Local Outside Air Temperature Sensor oatsens 10K Thermistor Space Temperature Offset Pot Al 100K Potentiometer Indoor Air Quality Al 4 20 ma mq Outdoor Air Quality oq
49. ingle Point kits see page 17 548J 14D Thermostat Sensors see pages 21 22 CO sensor see pages 22 24 Louvered hail guard Phase monitor control Refer to separate installation instructions for information on installing these accessories 33 34 35 548J 14D 2011 Bryant Heating amp Cooling Systems e 7310 W Morris St e Indianapolis IN 46231 Printed in U S A Edition Date 01 11 Manufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations 36 Catalog No 11548J 07 Replaces ll548J 06
50. ke Electrical Connections 11 11 Units without Factory Installed Disconnect 13 Units with Factory Installed Disconnect 13 Convenience Outlets llle 13 Factory Option Thru Base Connections 15 Units without Thru Base Connections 15 Field Control 15 Ste e tec eem Res 15 Unit without Thru Base Conversion Kit 16 Heat Anticipator Settings 16 Electric Heaters sizes e e bidet 16 Single Point 68 17 Heater Low Voltage Control Connections 17 Outdoor Air Enthalpy Control 18 Differential Enthalpy 18 Return Air Enthalpy Sensor 18 RTU MP Control 19 Supply Air Temperature SAT Sensor 21 Outdoor Air Temperature OAT Sensor 22 eA ee ede pedes 22 Field Connections 00 002 eee eee 22 Space Temperature SPT Sensors 22 Economizer Controls 23 Indoor Air Quality CO2 Sensor 23 Outdoor Air Quality Sensor 24 Connecting Discrete Inputs 24 Communication Wiring Protocols 25 General 25 Local ACCESS isco ie WS EVE dae n RETE 25 RTU MP Troubl
51. mper C10333 TM Fig 55 EconoMi er IV Wiring Step 11 Adjust Factory Installed Options Smoke Detectors Smoke detector s will be connected at the Central Terminal Board CTB at terminals marked Smoke Shutdown Remove jumper JMP 3 when ready to energize unit EconoMi er IV Occupancy Switch Refer to Fig 55 for general EconoMi er IV wiring External occupancy control is managed through a connection on the Central Terminal Board If external occupancy control is desired connect a time clock or remotely controlled switch closed for Occupied open for Unoccupied sequence at terminals marked OCCUPANCY on CTB Remove or cut jumper JMP 2 to complete the installation 32 Step 12 Install Accessories Pre Start and Start Up Available accessories include This completes the mechanical installation of the unit Roof Curb must be installed before unit Refer to the unit s Service Manual for detailed Pre Start Thru base connection kit must be installed before unit is set on curb see page 15 Manual outside air damper Two Position motorized outside air damper see page 9 EconoMi er IV with control and integrated barometric relief see page 8 EconoMi er2 without control for external signal and integrated barometric relief see page 8 Power Exhaust Differential dry bulb sensor EconoMi er IV Outdoor enthalpy sensor Differential enthalpy sensor Electric Heaters see page 16 S
52. ng must comply with the NEC and local requirements Size wire based on MCA Minimum Circuit Amps on the unit informative plate See Fig 22 and the unit label diagram for power wiring connections to the unit power terminal blocks and equipment ground Maximum wire size is 2 0 AWG per pole Provide a ground fault and short circuit over current protection device fuse or breaker per NEC Article 440 or local codes Refer to unit informative data plate for MOCP Maximum Over current Protection device size Voltage to compressor terminals during operation must be within voltage range indicated on unit nameplate See Table 4 On 3 phase units voltages between phases must be balanced within 2 and the current within 10 Use the formula shown in the legend for Table 4 see Note 2 on page 32 to determine the percent of voltage imbalance A CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage Operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical components Such operation would invalidate any applicable Bryant warranty 12 Units Without Factory Installed Disconnect When installing units provide a disconnect switch of adequate size per NEC National Electrical Code Disconnect sizing data is provided on the unit informative plate Locate on unit cabinet or within sight of the unit per national or local codes Do not
53. nsor where it is influenced by the supply air the sensor gives inaccurate readings if the supply air is blown directly onto the sensor or if the supply air does not have a chance to mix with the room air before it is drawn into the return airstream Wiring the Indoor Air Quality Sensor For each sensor use two 2 conductor 18 AWG American Wire Gage twisted pair cables unshielded to connect the separate isolated 24 vac power source to the sensor and to connect the sensor to the control board terminals 23 548J 14D 548J 14D To connect the sensor to the control identify the positive 4 to 20 mA and ground SIG COM terminals on the sensor See Fig 42 Connect the 4 20 mA terminal to RTU MP J4 2 and connect the SIG COM terminal to RTU MP J4 3 See Fig 43 IAQ Sensor Mog J4 3 24 VAC C08462 Fig 43 RTU MP Indoor CO Sensor 33ZCSENCO2 Connections Outdoor Air Quality Sensor PNO 33ZCSENCO2 plus weatherproof enclosure The outdoor air CO sensor is designed to monitor carbon dioxide CO levels in the outside ventilation air and interface with the ventilation damper in an HVAC system The OAQ sensor is packaged with an outdoor cover See Fig 44 The outdoor air CO sensor must be located in the economizer outside air hood 4 1 4 3 3 4 EN 3 5 hk 6 1 2 COVER REMOVED SIDE VIEW C07135 Fig 44 Outdoor Air Quality Sensor Cover
54. of tbe aupply of T M opening or in the supply air duct as required by local codes Drill or punch a 5 in hole in the flange or duct C10020 Use two field supplied self drilling screws to secure the Fig 36 Typical Mounting Location for Supply Air sensor probe in a horizontal orientation See Fig 36 Temperature SAT Sensor on Small Rooftop Units 21 548J 14D Outdoor Air Temperature OAT Sensor The OAT is factory mounted in the EconoMi er2 FIOP or accessory It is a nominal 10k ohm thermistor attached to an eyelet mounting ring EconoMi er2 The RTU MP control is used with EconoMi er2 option or accessory for outdoor air management The damper position is controlled directly by the RTU MP control EconoMi er2 has no internal logic device Outdoor air management functions can be enhanced with field installation of these accessory control devices Enthalpy control outdoor air or differential sensors Space CO sensor Outdoor air CO sensor Field Connections Field connections for accessory sensors and input devices are made the RTU MP at plugs J1 J2 J4 JS J11 and 120 All field control wiring that connects to the RTU MP must be routed as shown in Fig 28 This routing provides the UL required clearance between high and low voltage wiring Connect to the wires to the removable Phoenix connectors and then reconnect the connectors to the board Space Temperature SPT Sensors A field sup
55. onnections Table 3 LEDs The LEDs on the RTU MP show the status of certain functions If Run LED shows And Error LED shows Status is 2 flashes per second 2 flashes alternating with Run LED 3 flashes Control module has just been formatted 4 flashes Two or more devices on this network have the then pause same ARC156 network address Exec halted after frequent system errors or control programs halted fon Eec stan up aborted Boot is running Firmware transfer in progress Boot is running 7 flashes per second alternating with Ten second recovery period after brownout Run LED 14 flashes per second alternating with Run LED Failure Try the following solutions e Turn the RTU MP off then on e Format the RTU MP e Download memory to the RTU MP Replace the RTU MP 26 NOTE Contact your Bryant applications engineer for details on configuration of RTU MP operating sequences and troubleshooting information as well as details on configuration and troubleshooting of connected networks Smoke Detectors Smoke detectors are available as factory installed options on 548J 14D models Smoke detectors may be specified for Supply Air only or for Return Air without or with economizer or in combination of Supply Air and Return Air Return Air smoke detectors are arranged for vertical return configurations only All components necessary for operation are factory provided and mounted The unit is factory confi
56. per requirements Refer to Step 9 Install External Condensate Trap and Line for required trap dimensions Roof Mount Check building codes for weight distribution requirements Unit operating weight is shown in Table 1 Table 1 Operating Weights 548J 14D UNITS LB KG 1570 629 Economizer Vertical Horizontal Curb 14 in 356 mm 24 in 610 mm 180 82 235 107 Step 2 Plan for Sequence of Unit Installation The support method used for this unit will dictate different sequences for the steps of unit installation For example on curb mounted units some accessories must be installed on the unit before the unit is placed on the curb Review the following for recommended sequences for installation steps Curb mounted installation Install curb Install field fabricated ductwork inside curb Install accessory thru base service connection package affects curb and unit refer to accessory installation instructions for details Prepare bottom condensate drain connection to suit planned condensate line routing refer to Step 9 for details Rig and place unit Install outdoor air hood Install condensate line trap and piping Make electrical connections Install other accessories Pad mounted installation Prepare pad and unit supports Check and tighten the bottom condensate drain connection plug Rig and place unit Convert unit to side duct connection arrangement Install field fabri
57. plied Bryant space temperature sensor is required with the RTU MP to monitor space temperature There are 3 sensors available for this application e 33ZCTSSSPT space temperature sensor with override button e 33ZCT56SPT space temperature sensor with override button and setpoint adjustment e 33ZCTS9SPT space temperature sensor with LCD liquid crystal display screen override button and setpoint adjustment Use 20 gauge wire to connect the sensor to the controller The wire is suitable for distances of up to 500 ft Use a three conductor shielded cable for the sensor and setpoint adjustment connections If the setpoint adjustment slidebar is not required then an unshielded 18 or 20 gauge two conductor twisted pair cable may be used Connect T 55 See Fig 37 for typical T 55 internal connections Connect the T 55 SEN terminals to RTU MP J20 1 and J20 2 See Fig 38 VOID CCN COM SENSOR WIRING C08201 Fig 37 T 55 Space Temperature Sensor Wiring C08460 Fig 38 RTU MP T 55 Sensor Connections Connect T 56 See Fig 39 for T 56 internal connections Install a jumper between SEN and SET terminals as illustrated Connect T 56 terminals to RTU MP J20 1 J20 2 and J20 3 per Fig 40
58. r from the condenser end of the unit to either the factory option disconnect the bottom of the control box or the single point box accessory 1 conduit is provided behind the access panel located under the control box For those units that require conduit larger than 1 it must be field supplied Figures 16 17 and 18 show the various wire routings C10010 Fig 16 Conduit into Factory Option Disconnect C10011 Fig 17 Conduit into Control Box C10012 Fig 18 Conduit into Single Point Box If the field disconnect is larger than 100A it must be attached to the unit using accessory CRDISBKT001A00 see Fig 19 Follow the instructions provided with this accessory For smaller field disconnects be sure to use 1 5 screws to mount the disconnect directly to the end panel see Fig 20 In either case set the disconnect vertical location on the unit so that a 90 fitting can be used to connect the conduit to the disconnect 11 548J 14D 548J 14D He ae E C10014 Fig 19 Mounting Position for Field Disconnects over 100A C10013
59. should be deep enough to offset maximum unit static difference A 4 102 trap is recommended C08022 Fig 15 Condensate Drain Piping Details All units must have an external trap for condensate drainage Install a trap at least 4 in 102 mm deep and protect against freeze up If drain line is installed downstream from the external trap pitch the line away from the unit at 1 in per 10 ft 25 mm in 3 m of run Do not use a pipe size smaller than the unit connection 3 4 in Step 10 Make Electrical Connections A WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death Do not use gas piping as an electrical ground Unit cabinet must have an uninterrupted unbroken electrical ground to minimize the possibility of personal injury if an electrical fault should occur This ground may consist of electrical wire connected to unit ground lug in control compartment or conduit approved for electrical ground when installed in accordance with NEC National Electrical Code ANSI NFPA 70 latest edition in Canada Canadian Electrical Code CSA Canadian Standards Association C22 1 and local electrical codes NOTE Check all factory and field electrical connections for tightness Field supplied wiring shall conform with the limitations of 63 F 33 C rise Field Power Supply For those units without through the curb power conduit must be used to route the main powe
60. side air and return air enthalpy conditions Install the outdoor air enthalpy control as described above Add and install a return air enthalpy sensor Mount the return air enthalpy sensor 33CSENTSEN in the return air section of the economizer The return air sensor is wired to the enthalpy controller 33CSENTHSW See Fig 32 Enthalpy Switch ECONO MOTOR CTB 7 ECON Factory Wiring Return Air Harness Enthalpy Sensor 24 36 54 A on Out C10282 Fig 32 Outside and Return Air Enthalpy Sensor Wiring 18 RTU MP Control System The RTU MP controller see Fig 33 provides expanded stand alone operation of the HVAC system plus connection and control through communication with several Building Automation Systems BAS through popular third party network systems The available network systems are BACnet MP TP Modbus and Johnson J2 Communication with LonWorks is also possible by adding an accessory interface card to the RTU MP Selection of the communication protocol and baud rate are made at on board DIP switches c R Uu 8 a v S RTU MP Ovi 3ndui NI 2VA tZ x indui SGA v2 20 HK50AA047 PCBH012311 Rev 3 4 RTU MP LOCAL ACCESS PORT RNET 4 E12 voc hunc le Rnet te GND eos The RTU MP control is factory mounted in the 548J 14D unit s main control box to the left of the CTB See Fig 34 Factory wiring is complete
61. t to recognize safety information This is the safety alert symbol When you see this symbol on the unit and in instructions or manuals be alert to the potential for personal injury Understand the signal words DANGER WARNING CAUTION and NOTE These words are used with the safety alert symbol DANGER identifies the most serious hazards which will result in severe personal injury or death WARNING signifies hazards which could result in personal injury or death CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage NOTE is used to highlight suggestions which will result in enhanced installation reliability or operation A WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could cause personal injury or death Before performing service or maintenance operations on unit always turn off main power switch to unit and install lockout tag Unit may have more than one power switch A WARNING UNIT OPERATION AND SAFETY HAZARD Failure to follow this warning could cause personal injury death and or equipment damage Puron R 410A refrigerant systems operate at higher pressures than standard R 22 systems Do not use R 22 service equipment or components on Puron refrigerant equipment A WARNING PERSONAL INJURY AND ENVIRONMENTAL HAZARD Failure to follow this warning could cause personal injury or death Relieve pressure and recover all r
62. tage Imbalance 100 x voltage is greater than 2 Use the following formula to de 227 termine the percentage of voltage imbalance 1 76 max voltage deviation from average voltage This amount of phase imbalance is satisfactory as it is below the maximum allowable 2 IMPORTANT If the supply voltage phase imbalance is more than 2 contact your local electric utility company immediately 96 Voltage Imbalance 100 x average voltage POTENTIOMETER DE DEFAULTS SETTINGS U i di U U 2 U i PORER ENR MIDDAE ECONOMIZER FIOP ACCESSORY DCV MAX FULLY CLOSED PNK DCV SET DDLE ENTHALPY C SETTING r i BLK RED RED ET diea M EXH TRI ECONOMIZER ACCESSORY 4 e 1 MOTOR REMOTE MIN BRN POSITION POT 78 63 RAO eus BRN 2 H 3 REMOTE POT 135 Ohm P EXH 28 244 ave RED PNK Ny 9 oc BLK 82 Hou coal 6 Mu L6 R T FOR STD n gt PNK OPEN vi PL6 R PL6 R UNIT PL6 iFror AccESsoRr TAN rum 1AQ S
63. the communication languages spoken by control devices The main purpose of a protocol is to communicate information in the most efficient method possible Different protocols exist to provide different kinds of information for different applications In the BAS application many different protocols are used depending on manufacturer Protocols do not change the function of a controller just make the front end user different The RTU MP can be set to communicate on four different protocols BACnet Modbus N2 and LonWorks Switch 3 SW3 on the board is used to set protocol and baud rate Switches 1 and 2 SW1 and SW2 are used to set the board s network address See Fig 47 for the switch setting per protocol The 3rd party connection to the RTU MP is through plug J19 NOTE Power must be cycled after changing the SW1 3 switch settings Refer to the RTU MP 3rd Party Integration Guide for more detailed information on protocols 3rd party wiring and networking Local Access BACview Handheld The BACview is a keypad display interface used to connect to the RTU MP to access the control information read sensor values and test the RTU see Fig 48 This is an accessory interface that does not come with the MP controller and can only be used at the unit Connect the BACview to the RTU MP s J12 local access port There are 2 password protected levels in the display User and Admin The user password is defaulted to 0000 but can
64. turn Air without Economizer The sampling tube is located across the return air opening on the unit basepan See Fig 52 The holes in the sampling tube face downward into the return air stream The sampling tube is connected via tubing to the return air sensor that is mounted on a bracket high on the partition between return filter and controller location This sensor is shipped in a flat mounting location Installation requires that this sensor be relocated to its operating location and the tubing to the sampling tube be connected See Completing Installation of Return Air Smoke Sensor on page 29 for details Return Air with Economizer The sampling tube is inserted through the side plates of the economizer housing placing it across the return air opening on the unit basepan See Fig 52 The holes in the sampling tube face downward into the return air stream The sampling tube is connected via tubing to the return air sensor that is mounted on a bracket high on the partition between return filter and controller location This sensor is shipped in a flat mounting location Installation requires that this sensor be relocated to its operating location and the tubing to the sampling tube be connected See the following installation procedure Flexible Exhaust Tube Return Air Sampling Tube C10330 Fig 52 Return Air Sampling Tube Location 28 Completing Installation of Return Air Smoke Sensor 1
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